Functional safety in a battery management system

A method for functional safety in a battery management system, the method comprising:

• receiving from a module monitoring system (MMS) of the battery management system, by a network controller of the BMS, a message that includes a first set of data type blocks;
• determining, by the network controller, for the first set of data type blocks, a block sequence order that indicates a position of each data type block within the message;
• determining, by the network controller, whether the message conforms with a predetermined block sequence protocol;
• and
• in response to determining that the message does not conform with a predetermined block sequence protocol, determining, by the network controller, that data within the message is stale.

An apparatus for functional safety in a battery management system, the apparatus including a module monitoring system (MMS) of the battery management system (BMS), the MMS including:

• a processor;
• memory coupled to the processor, the memory including computer program instructions that when executed by the processor cause the MMS to perform the operations of:
• generating battery sensor data;
• generating, based on a block sequence protocol, a message that encodes the battery sensor data including:
• determining a first set of data type blocks to include in the message;
• determining for the message, a block sequence order of the first set of data type blocks including for each data type block of the first set of data type blocks, selecting, within a block sequence order, a position for the data type block that is different than a previous position of the data type block within a previous block sequence order of a consecutively preceding message;
• and
• generating the message with each data type block of the first set of data type blocks positioned according to its selected position within the determined block sequence order;
• and
• sending the message to a network controller of the BMS.